Version: 4.19.67-2+deb10u2
After i've upgraded some computers from stretch to buster i got strange CPU error when i switch on or off the machine.
This is the error i got:
systemd-journald[287]: Failed to send
WATCHDOG=1 notification message: Connection refused.
rcu: INFO: rcu_sched self-detected stall on CPU
rcu: 1-....: (5249 ticks this GP)
idle=bce/1/0x40000000000000002 softirq=103055/103055 fqs=2374
rcu: (t=5250 jiffies g=179473 q=1)
watchdog: BUG: soft lookup - CPU#1 stuck for 22s!
[systemd-shutdown:1]
I tried to change kernel to buster-backports
linux-image-5.2.0-0.bpo.3-rt-amd64, this error disappeared but i
got some issues with third party java's application.
So i tried to modify some kernel params:
sysctl -w kernel.watchdog_thresh=20
sysctl -w kernel.nmi_watchdog=0
and
echo blacklist sp5100_tco > /etc/modprobe.d/nmi-blacklist.conf
in /etc/default/grub i changed
GRUB_CMDLINE_LINUX_DEFAULT="nmi_watchdog=0 memory_corruption_check=0 quiet"
but nothing happened.
In the end, i was forced to install kernel 4.9 from stretch (4.9.0-11-amd64) and this error disappeared.
There is something i can try to fix this?
Thank you,
Lori